Volute with adjustable intake and exhaust

Abstract

The utility model discloses an intake and exhaust adjustable volute, which comprises a volute body provided with a first air inlet and a first air inlet passage, the first air inlet is communicated with the first air inlet passage, and is characterized in that the volute body is also provided with a second air inlet and a second air inlet passage, the second air inlet is communicated with the second air inlet passage, and the second air inlet passage is communicated with the second air inlet passage. The control unit is used for controlling waste gas to flow into the second gas inlet channel, and the control unit is matched with the second gas inlet and / or the second gas inlet channel. The turbine lag phenomenon of the engine in the starting stage is effectively relieved.

Description

Technical Field

[0001] This utility model relates to the field of turbocharger technology, specifically to an adjustable intake and exhaust turbine housing. Background Technology

[0002] A turbocharger is a device in automobiles that increases the intake pressure of the cylinders. Turbocharging involves pre-compressing air before it is supplied to the cylinders to increase air density and increase the intake volume. This increases the amount of air intake, improves power, fuel economy, and emissions.

[0003] The exhaust gas from the cylinders is the power source for the turbocharger. Generally speaking, the more exhaust gas and the higher the exhaust gas pressure, the faster the turbine rotates, and the stronger the turbocharger's effect, resulting in more vigorous turbocharger operation. The more vigorous the turbocharger operation, the more exhaust gas is produced. This leads to the turbine speed increasing rapidly, causing overspeeding; eventually, it becomes uncontrollable, resulting in engine damage. To prevent this, the turbocharger is designed with an exhaust gas bypass structure on the turbine housing to discharge excess exhaust gas.

[0004] Defects and shortcomings of existing technology:

[0005] 1. Turbo lag occurs during the turbocharging process. When the throttle is fully open, the turbocharger's boost pressure takes some time to gradually increase. This phenomenon causes a slight lag in power output during instantaneous acceleration. Turbo lag mainly occurs because the amount of exhaust gas produced by the engine at low speeds is insufficient to drive the turbocharger.

[0006] 2. During operation, when the intake air volume is excessive, it bypasses through the turbine casing damper hole to ensure the turbine rotor does not overspeed. Different damper hole diameter designs will alter the exhaust volume, affecting the turbocharger's efficiency. Any design errors or deviations during casting will impact the final product's performance. Once the intake and exhaust structure design is flawed or deviations occur during casting, they are very difficult to correct, potentially leading to significant cost impacts and performance degradation. Utility Model Content

[0007] This invention provides an adjustable intake and exhaust turbine housing, which effectively alleviates turbo lag during engine startup.

[0008] The technical solutions to the above problems are as follows:

[0009] An adjustable intake and exhaust vortex housing includes a vortex housing body, a first intake port and a first intake passage on the vortex housing body, the first intake port and the first intake passage being in communication, characterized in that the vortex housing body also has a second intake port and a second intake passage, the second intake port and the second intake passage being in communication, and further includes a control unit for controlling the flow of exhaust gas into the second intake passage, the control unit cooperating with the second intake port and / or the second intake passage.

[0010] Furthermore, the control unit includes a driver, a shaft, and a valve cover. The driver is connected to the shaft, the shaft is connected to the valve cover, and the valve cover mates with a second air inlet and / or a second air intake passage.

[0011] Furthermore, a sealing ring is provided in the second air inlet, and the valve cover is fitted with the sealing ring.

[0012] Furthermore, the vortex housing body has mounting holes on its circumferential surface, through which the control unit enters the second air intake.

[0013] Furthermore, it also includes a damper cover with ventilation holes and screws. The vortex body has a damper hole, the damper cover mates with the damper hole, and the damper cover is fastened to the vortex body by screws.

[0014] When the engine first starts, the exhaust gas volume is low and the intake pressure is low. The control unit closes the second intake port or passage to prevent exhaust gas from flowing into the second intake passage, allowing it to enter the first intake passage. Once the exhaust gas enters the first intake passage, its pressure increases rapidly, driving the turbine more quickly and reducing turbo lag. When the engine reaches high speeds and the exhaust gas volume and intake pressure increase, the control unit releases the closure of the second intake port or passage, allowing exhaust gas to flow into both the first and second intake passages. This maintains the intake pressure at a normal level, meeting the demand for high exhaust gas flow and ensuring smooth turbocharger operation. Attached Figure Description

[0015] Figure 1 This is a structural diagram of an adjustable intake and exhaust volute.

[0016] Figure 2 This is a cross-sectional view of an adjustable intake and exhaust volute.

[0017] Figure 3 This is a schematic diagram of an adjustable intake and exhaust vortex housing in another direction.

[0018] Figure 4 For along Figure 3 A cross-sectional view of the BB line in the diagram.

[0019] Labels in the attached diagram:

[0020] 1. Vortex housing body, 2. First air inlet, 3. First air inlet duct, 4. Second air inlet, 5. Second air inlet, 6. Driver, 7. Shaft, 8. Valve cover, 9. Sealing ring, 10. Assembly hole, 11. Damper cover, 12. Screw, 13. Damper hole. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0022] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "connection", "linking", "fixing" and other such terms should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components, unless otherwise explicitly limited.

[0025] like Figures 1 to 4 As shown, the present invention discloses an adjustable intake and exhaust vortex housing, comprising a vortex housing body 1, wherein the vortex housing body 1 is provided with a first intake port 2 and a first intake channel 3, the first intake port 2 and the first intake channel 3 being connected; the vortex housing body 1 is also provided with a second intake port 4 and a second intake channel 5, the second intake port 4 and the second intake channel 5 being connected; and further comprising a control unit for controlling the flow of exhaust gas into the second intake channel 5, the control unit cooperating with the second intake port 4 and / or the second intake channel 5.

[0026] When the engine first starts, the exhaust gas volume is low and the intake pressure is low. The control unit closes the second intake port 4 or the second intake passage 5 to prevent exhaust gas from flowing into the second intake passage 5, while allowing exhaust gas to enter the first intake passage 3. Once the exhaust gas enters the first intake passage 3, the exhaust gas pressure increases rapidly, driving the turbine more quickly and reducing turbo lag. When the engine reaches high speed and the exhaust gas volume increases, the control unit releases the closure of the second intake port 4 or the second intake passage 5, allowing exhaust gas to flow into both the first intake passage 3 and the second intake passage 5. This maintains the intake pressure at a normal level, meeting the demand for high exhaust gas flow and ensuring the smooth operation of the turbocharger.

[0027] The control unit includes a driver 6, a shaft 7, and a valve cover 8. The driver 6 is connected to the shaft 7, and the shaft 7 is connected to the valve cover 8. The valve cover 8 cooperates with the second air inlet 4 and / or the second air intake passage 5. The driver 6 drives the shaft 7 to rotate, and the shaft 7 drives the valve cover 8 to move, thereby controlling whether exhaust gas flows into the second air intake passage 5 through the action of the valve cover 8. The driver 6 can be a linear driver, such as a hydraulic cylinder or a pneumatic cylinder. In this embodiment, the circumferential surface of the volute body 1 is provided with a mounting hole 10. The control unit passes through the mounting hole 10 to enter the second air intake passage 5, that is, the shaft 7 passes through the mounting hole 10 to enter the second air intake passage 5, and the valve cover 8 is located in the second air intake passage 5.

[0028] In this embodiment, a sealing ring 9 is provided in the second air inlet 4, and the valve cover 8 cooperates with the sealing ring 9. A step is provided between the second air inlet 4 and the second air intake duct 5, and the step provides axial positioning for the sealing ring 9. Since the inner diameter of the second air intake duct 5 is limited, the size of the valve cover 8 can be reduced through the cooperation of the sealing ring 9 and the valve cover 8, thus preventing the valve cover 8 from colliding with the inner wall of the second air intake duct 5 during rotation with the coaxial shaft 7.

[0029] This embodiment also includes a damper cover 11 with vent holes and screws 12. The vortex body 1 is provided with a damper hole 13. The damper cover 11 mates with the damper hole 13, and the damper cover 11 and the vortex body 1 are fastened together by the screws 12. If the size of the damper hole 13 changes later, the size of the damper hole 13 is modified, and the damper cover 11 can be directly replaced without recasting the blank of the vortex body 1. This structure can save a lot of time and improve R&D efficiency.

[0030] Based on the above, this utility model has the following advantages:

[0031] 1. The variable cross-section exhaust gas input structure can effectively improve turbine lag.

[0032] 2. The damper cover makes it easier to adapt to changes in the damper opening.

[0033] In summary, this utility model has a simple structure and is easy to replace, which can effectively reduce problems caused by design or casting of blanks, effectively reduce scrap rate, and reduce finished product input.

Claims

1. A variable inlet and exhaust volute, comprising a volute body (1), a first inlet (2) and a first inlet channel (3) are arranged on the volute body (1), the first inlet (2) and the first inlet channel (3) are through, characterized in that, The volute body (1) is further provided with a second air inlet (4) and a second air inlet channel (5), the second air inlet (4) is in communication with the second air inlet channel (5), and further comprises a control unit for controlling the flow of exhaust gas into the second air inlet channel (5), the control unit is matched with the second air inlet (4) and / or the second air inlet channel (5).

2. An inlet and outlet adjustable volute according to claim 1, wherein, The control unit comprises a driver (6), a shaft (7) and a valve cover (8), the driver (6) is connected with the shaft (7), the shaft (7) is connected with the valve cover (8), and the valve cover (8) is matched with the second air inlet (4) and / or the second air inlet channel (5).

3. A variable inlet guide vane diffuser according to claim 1, wherein, A sealing ring (9) is arranged in the second air inlet (4), and the valve cover (8) is matched with the sealing ring (9).

4. The inducer according to claim 1, wherein The volute body (1) is provided with a mounting hole (10) on the peripheral surface, and the control unit enters the second air inlet channel (5) through the mounting hole (10).

5. An inlet and outlet adjustable volute according to claim 1, wherein, Further comprising a damper cover (11) with a vent hole and a screw (12), the volute body (1) is provided with a damper hole (13), the damper cover (11) is matched with the damper hole (13), and the damper cover (11) is fastened with the volute body (1) through the screw (12).

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